<template>
    <view class="my-settle-container">
        <!-- 全选区域 -->
        <label class="radio" @click="changeAllState">
            <radio color="#C00000" :checked="isFullCheck" /><text>全选</text>
        </label>

        <!-- 合计区域 -->
        <view class="amount-box">
            合计:<text class="amount">￥{{checkedGoodsAmount}}</text>
        </view>

        <!-- 结算按钮 -->
        <view class="btn-settle" @click="settlement">结算({{checkedCount}})</view>
    </view>
</template>

<script>
    import {
        mapGetters,
        mapMutations,
        mapState
    } from 'vuex'

    export default {
        name: "my-settle",
        data() {
            return {
                // 倒计时的秒数
                seconds: 3,
                // 定时器的 Id
                timer: null
            };
        },
        computed: {
            ...mapGetters('CartStore', ['total', 'checkedCount', 'checkedGoodsAmount']),
            ...mapGetters('UserStore', ['addstr']),
            ...mapState('UserStore', ['token']),
            ...mapState('CartStore', ['cart']),
            //是否全选
            isFullCheck() {
                return this.total === this.checkedCount
            },
        },
        methods: {
            ...mapMutations('CartStore', ['updateAllGoodsState']),
            ...mapMutations('UserStore', ['updateRedirectInfo']),
            // 全选按钮的点击事件处理函数
            changeAllState() {
                this.updateAllGoodsState(!this.isFullCheck)
            },
            //结算按钮功能
            settlement() {
                //判断是否勾选了要结算的商品
                if (!this.checkedCount) return uni.showToast({
                    title: '请选择结算商品',
                    icon: 'error',
                    duration: 2000
                });
                //判断用户是否选择了收货地址
                if (!this.addstr) return uni.showToast({
                    title: '请选择收货地址',
                    icon: 'error',
                    duration: 2000
                });
                //判断用户是否登录了，如果没有登录，则调用 delayNavigate() 进行倒计时的导航跳转
                if (!this.token) return this.delayNavigate()
                //实现微信支付功能
                this.payOrder()
            },
            // 展示倒计时的提示消息
            showTips(n) {
                // 调用 uni.showToast() 方法，展示提示消息
                uni.showToast({
                    // 不展示任何图标
                    icon: 'none',
                    // 提示的消息
                    title: '请登录后再结算！' + n + ' 秒后自动跳转到登录页',
                    // 为页面添加透明遮罩，防止点击穿透
                    mask: true,
                    // 1.5 秒后自动消失
                    duration: 1500
                })
            },
            // 延迟导航到 my 页面
            delayNavigate() {
                //展示提示消息，此时 seconds 的值等于 3
                this.seconds = 3
                this.showTips(this.seconds)
                //创建定时器，每隔 1 秒执行一次
                this.timer = setInterval(() => {
                    //先让秒数自减 1
                    this.seconds--
                    //判断秒数是否 <= 0
                    if (this.seconds <= 0) {
                        //清除定时器
                        clearInterval(this.timer)
                        //跳转到 my 页面
                        uni.switchTab({
                            url: '/pages/my/my',
                            // 页面跳转成功之后的回调函数
                            success: () => {
                                // 调用 vuex 的 updateRedirectInfo 方法，把跳转信息存储到 Store 中
                                this.updateRedirectInfo({
                                    // 跳转的方式
                                    openType: 'switchTab',
                                    // 从哪个页面跳转过去的
                                    from: '/pages/cart/cart'
                                })
                            }
                        })
                        //终止后续代码的运行（当秒数为 0 时，不再展示 toast 提示消息）
                        return
                    }
                    //再根据最新的秒数，进行消息提示
                    this.showTips(this.seconds)
                }, 1000)
            },
            // 微信支付
            async payOrder() {
                //创建订单
                const orderInfo = {
                    // 开发期间，注释掉真实的订单价格，写死订单总价为 1 分钱
                    // order_price: this.checkedGoodsAmount,
                    order_price: 0.01,
                    consignee_addr: this.addstr,
                    goods: this.cart.filter(x => x.goods_state).map(x => ({
                        goods_id: x.goods_id,
                        goods_number: x.goods_count,
                        goods_price: x.goods_price
                    }))
                }
                console.log("订单信息", orderInfo)
                //发起请求创建订单
                let {
                    data: res
                } = await uni.$http.post('/api/public/v1/my/orders/create', orderInfo)
                res = {
                    "message": {
                        "order_id": 45,
                        "user_id": 12,
                        "order_number": "GD20180504000000000045",
                        "order_price": 0.1,
                        "order_pay": "0",
                        "is_send": "否",
                        "trade_no": "",
                        "order_fapiao_title": "个人",
                        "order_fapiao_company": "",
                        "order_fapiao_content": "",
                        "consignee_addr": "广州市天河区",
                        "pay_status": "0",
                        "create_time": 1525408071,
                        "update_time": 1525408071,
                        "order_detail": "[{\"goods_id\":55578,\"goods_name\":\"初语2017秋装新款潮牌女装加绒宽松BF风慵懒卫衣女套头连帽上衣\",\"goods_price\":279,\"goods_small_logo\":\"http://image2.suning.cn/uimg/b2c/newcatentries/0070067836-000000000690453616_2_400x400.jpg\",\"counts\":1,\"selectStatus\":true}]",
                        "goods": [{
                            "id": 64,
                            "order_id": 45,
                            "goods_id": 5,
                            "goods_price": 15,
                            "goods_number": 11,
                            "goods_total_price": 15
                        }]
                    },
                    "meta": {
                        "msg": "创建订单成功",
                        "status": 200
                    }
                }
                console.log("订单请求信息", res)
                console.log("订单编号", res.message.order_number)
                if (res.meta.status !== 200) return uni.showToast({
                    title: '创建订单失败！',
                    duration: 1500,
                    icon: 'none',
                })
                //成功后，得到服务器响应的“订单编号”
                const orderNumber = res.message.order_number
                // 2. 订单预支付
                let {
                    data: res2
                } = await uni.$http.post('/api/public/v1/my/orders/req_unifiedorder', {
                    order_number: orderNumber
                })
                res2 = {
                    "message": {
                        "pay": {
                            "timeStamp": "1525681145",
                            "nonceStr": "BkPggorBXZwPGXe3",
                            "package": "prepay_id=wx071619042918087bb4c1d3d72999385683",
                            "signType": "MD5",
                            "paySign": "D1642DEEF1663C8012EDEB9297E1D516"
                        },
                        "order_number": "GD20180507000000000110"
                    },
                    "meta": {
                        "msg": "预付订单生成成功",
                        "status": 200
                    }
                }
                console.log("订单预支付请求结果", res2)
                console.log("订单支付相关的必要参数", res2.message.pay)
                // 2.2 预付订单生成失败
                if (res2.meta.status !== 200) return uni.showToast({
                    title: '预付订单生成失败！',
                    duration: 1500,
                    icon: 'none',
                })
                //得到订单支付相关的必要参数
                const payInfo = res2.message.pay
                // 3. 发起微信支付
                const [err, succ] = await uni.requestPayment(payInfo)
                console.log("成功", succ)
                console.log("失败", err)
                //未完成支付
                if (err) return uni.showToast({
                    title: '订单未支付！',
                    duration: 1500,
                    icon: 'none',
                })
                //完成了支付，进一步查询支付的结果
                const {
                    data: res3
                } = await uni.$http.post('/api/public/v1/my/orders/chkOrder', {
                    order_number: orderNumber
                })
                //检测到订单未支付
                if (res3.meta.status !== 200) return uni.showToast({
                    title: '订单未支付！',
                    duration: 1500,
                    icon: 'none',
                })
                //检测到订单支付完成
                uni.showToast({
                    title: '支付完成！',
                    icon: 'success'
                })
            },

        },
    }
</script>

<style lang="scss">
    .my-settle-container {
        /* 底部固定定位 */
        position: fixed;
        bottom: 0;
        left: 0;
        /* 设置宽高和背景色 */
        width: 100%;
        height: 50px;
        background-color: white;
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding-left: 5px;
        font-size: 14px;
    }

    // 全选区域
    .radio {
        display: flex;
        align-items: center;
    }

    // 合计区域
    .amount-box {
        .amount {
            color: #c00000;
            font-weight: bold;
        }
    }


    // 结算按钮
    .btn-settle {
        height: 50px;
        min-width: 100px;
        background-color: #c00000;
        color: white;
        line-height: 50px;
        text-align: center;
        padding: 0 10px;
    }
</style>